Two-order low-power sigma-delta modulator with SC techniques

Lei Zhang*, Xian Li Zhao, Xing Hua Wang, Ruo Yuan Qu

*Corresponding author for this work

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Abstract

This paper presents a sigma-delta modulator of two-order with switched-capacitors (SC) techniques for low power in 0.18um CMOS process. Without continues current transmission SC techniques present a discrete low power system. And a low power op amplifier with discrete common-mode feedback and a dynamic comparator is also designed. This new amp works under the supply of 1.8v and with the direct current of 200uA. The tool Matlab is used to simulate the behavior system, while Cadence is used to design the circuit and the layout in 0.18 um CMOS (1.8v model) process. The modulator achieves 81dB dynamic range in 24-kHz signal bandwidth with OSR=128. And it consumes 0.8mW under 1.8v supply voltage.

Original languageEnglish
Title of host publicationICSE 2010 - Proceedings IEEE International Conference on Semiconductor Electronics
Pages96-99
Number of pages4
DOIs
Publication statusPublished - 2010
Event2010 IEEE International Conference on Semiconductor Electronics, ICSE 2010 - Melaka, Malaysia
Duration: 28 Jun 201030 Jun 2010

Publication series

NameIEEE International Conference on Semiconductor Electronics, Proceedings, ICSE

Conference

Conference2010 IEEE International Conference on Semiconductor Electronics, ICSE 2010
Country/TerritoryMalaysia
CityMelaka
Period28/06/1030/06/10

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Zhang, L., Zhao, X. L., Wang, X. H., & Qu, R. Y. (2010). Two-order low-power sigma-delta modulator with SC techniques. In ICSE 2010 - Proceedings IEEE International Conference on Semiconductor Electronics (pp. 96-99). Article 5549418 (IEEE International Conference on Semiconductor Electronics, Proceedings, ICSE). https://doi.org/10.1109/SMELEC.2010.5549418